fun <E, T : Iterable<E>> Assert<T>.containsStrictlyNullableValue(expectedOrNull: E): AssertionPlant<T> (source)
Makes the assertion that AssertionPlant.subject (which has a nullable entry type) contains only the expected nullable value.
It is a shortcut for contains.inOrder.only.nullableValue(expectedOrNull, *otherExpected)
AssertionError - Might throw an AssertionError if the assertion made is not correct.
Return
This plant to support a fluent API.